Detachable boiler-flue.



- PATENTED JAN. 15, 1907. J. P. BRAKE. DBTACHKABLE BOILER PLUE.APPLICATION FILED 00T 4 1906 WM uw m y mi n f J.

UNITED sTATEs PATENT oEEioE.

JULIAN F. BRAKE, OF TRACY, MINNESOTA, ASSIGNOR OF ONE-HALF' TO JOSEPHKEMNA, 0F GHENT, MINNESOTA.

DETACHABLE Bomen-PLUIE.

Specification of Letters Patent.

Application tiled October 4, 1906. Serial No. 837.335.

To @ZZ zuil/0711, it may concern.-

Be it known that I, JULIAN F. DRAKE, of Tracy, county of Lyon, State ofMinnesota, have invented certain new and useful Improvements inDetachable Boiler-Flues, of which the following is a specification. y

My invention relates to detachable boilerflues, and has for its objectto improve the device shown and described in Letters Patent of theUnited States, N o. 698,471,'issued to me April 28, 1902.

My invention consists generally in various constructions andcombinations, all as hereinafter described, and particularly pointed outin the claims.

part of this specification, Figure 1 is a view partially in section andpartially in plan, illustrating the application of my invention to aboiler-flue and flue-sheet. Fig. 2 is a similar view illustrating aslightly-modified construction. Fig. 3 is a front view.

In the drawings, 2 represents the iluel sheets, having flue-seats 8,that are tapered slightly in the same direction--that is, the flue-seaton the left ila-res slightly from its outer toward its inner end and thecorrespending seat in the opposite sheet iiares in a similar mannerfrornits inner toward its outer end.

4 is a tapered or conical sleeve provided at one end of the flue andfitting wit in theseat 3 and tapered from Iits outer toward its innerend and brazed or otherwise secured to one end of a flue 5. Apacking-ring 6, of copper or other material that is comparatively softand fusible at a high tem erature, is iitted between the sleeve 4 an theseat 3, the outer end 7 ofthe packing-ring being. upset, as indicated inthe figure, and the middle portion of the ring fitting snugly againstthe tapered Hue-seat and forming a tight joint therewith. At theopposite end of the iiue a tapered sleeve 8 is rovided, loose or brazedon the flue, as preterred, and between this sleeve and the Hue-seat is aring corresponding to the aching-ring described and having the sameunctions, but with its inner end u setas indicated, instead of its outerend. T e end of the flue is threaded, as indicated at 9, and a lock-nut10 is provided thereon, having a recessed or annular groove 11 in itsinner face, wherein a packing material 12 is i shown. In theaccompanying drawings, forming located and adapted to be forced againstthe ends of the ueS and its sleeve and ackingring When the nut istightened. eats 13 are provided in the nut to receive the pins of aWrench whenever it is desired to tighten or loosen the flue.

In Fig. 2 a similar construction is em- Patented Jan.- 15, 1907. i

ployed, except that both ends of the lue are threaded and the sleeve 14at one end is interiorly threaded to t the flue and tapered to corresond with the seat ofthe flue 1n the sheet. i similar sleeve 15 isprovided at the opposite end of the iiue, packing-rings being providedbetween the sleeve and sheets, as A lock-nut 16 engages the outer faceof the flue-sheet and when tightened draws the flue therethrough andforces the ta ered sleeves into the seats in the iiue and loc the flueand sheets securely together, though permitting them to be separatedwhenever desired. The rings 14 and 15 will contain sufficient stock toallow for the formation of the threads thereon, and their ends will beprovided, referably', with seats or sockets correspondin to those in thenut l0 for convenience of a justment of the rings on the iue.

I claim as my invention- 1'. In a boiler, the combination, with theflue-sheets spaced a art land in parallel rela' tion with one anot erand having tapered` flue-seats extending therethrough from one side tothe other, said seats being tapered in the same direction, one -from theinner toward the outer surface of its sheet and the other from the outertoward the inner surface of its sheet, a flue extending through vsaidsheets, and having a threaded end, vtapered sleeves provided on saidflue and fitting within said seats, said sleeves being tapered tocorrespond with said seats, packing-rings interposed between saidsleeves and seats and a lock-nut provided on the threaded end of saidflue and whereby said sleeves and rings may be drawn snugly against saidseats.

2. In a boiler, the combination, with the two fine-sheets having taperedflue-seats, of a iiue extending through said sheets and having athreaded end, conical sleeves inclosing said iiue and having taperedexterior surfaces corres onding to the taper of said seats, one of said)sleeves being rigidly secured on said flue and the other beingscrew-threaded thereon, packing-rings of relatively soft material IOOinterposed between said sleeves, yand seats, and a lock-nut provided onVthe thp'eaded end of said flue for the purpose specified.

1 3. Thecombmatlon, with the fiuesheetsV 5 having theta ered flue-seats,of a 'lue extending theret rough, sleeves inclosing said fiue and havinexterior surfaces tapered to correspond Wit the taper of said seats,packing-rings of comparatively soft material in- 1 o terposed betweensaid sleeves and sheets, and

a lock-nut provided on the threaded end of said ue and havinacountersunk inner face and a asking-ring ttingwithinsaid countersunk aceand bearing on the outer ends of the contiguous sleeve and packing-ring,substantially as described.

In witness whereof I have hereunto set my hand this 29th day of Setember, 1906.

JUL ANF. DRAKE. Witnesses:

GEORGE LITTLE, A. G. BUNFORD.

